JPS63163115A - Apparatus for taking out fluid energy - Google Patents

Abstract

PURPOSE:To obtain the title apparatus having a simple structure, by forming an escape groove having a wide interval to a rotor chamber from a position providing one pitch of the blade in front of the inlet of said chamber to the outlet thereof along the locus of the blades of a rotor so as to position the same corresponding to the outer periphery of the leading end of each blade or both sides thereof or both sides and the outer periphery of the leading end thereof. CONSTITUTION:When a main fluid is supplied to a rotor chamber 13 from the inlet 11 of a rotor case 10, the fluid acts on the blades 14a of a rotor 14 to rotate the rotor 14 and moves. A part of the fluid reaches an escape groove 15 to be discharged from an outlet 12. When the rotor 14 rotates corresponding to the flow rate of the fluid as mentioned above, this rotation is transmitted to a follower gear 23b from a drive gear 23a through a gear group while decelerated and allows the roller housing 31 of a tube pump 30 to rotate in a predetermined direction and an injection tube 34 is successively extruded by a roller 32 and, therefore, a different kind of fluids are supplied forwardly in a constant ratio by this constitution.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention enables a main fluid to be supplied with or injected with a predetermined amount of a different type of fluid at a constant ratio, or by disposing it in a fluid path through which the fluid flows. The present invention relates to a fluid energy extraction device for measuring the flow rate of fluid.

[Conventional technology]

An example of such a device currently in use is the one shown in FIG. This rotor 140 is rotated in order to rotate the rotor 140 in the rotor chamber 130.
From the inlet 110 through which the fluid passes through the vanes 140a of the outlet 1
20, and the rotor 140 is rotated by the force of this fluid.As shown in FIG. Currently, high accuracy can be obtained.

[Problem that the invention seeks to solve]

Therefore, the fluid acts on the blades, but the fluid remains trapped between the adjacent blades of the rotor and the inner wall of the rotor chamber, which creates resistance while the rotor is rotating. This rotor sometimes does not rotate, especially in small flow areas, resulting in a lack of reliability. Furthermore, when different types of fluids are mixed at a fixed ratio to the main fluid, if the rotation is irregular, the mixing ratio of these fluids will vary, making it impossible to automate such work. Ta. Furthermore, when the rotation of the rotor is extracted to measure the flow rate, there are various problems such as the inability to use the flow rate in a small flow range.

(Means for Solving the Problems) The present invention was invented for the purpose of solving the above problems and also making it possible to accurately extract fluid energy even in a small flow rate range. Population 11
A rotor chamber 13 is formed between and the outlet 12, and this population 1
In the rotor case 10, which introduces fluid from the rotor chamber 1 and discharges the fluid from the outlet 12, the rotor 1 has blades 14a formed in the rotor chamber 13 at equal intervals in the radial direction.
A small gap is formed between the blades 14a of the rotor 14 and the insides 113a and 13b of the rotor chamber 13, and the inlet 11 is located at a position where the air flows in from the tangential direction to the rotor 14. The outlet 12 is formed at a position moved from the inlet 11 by a distance of at least one pitch of the blade 1da in the reverse direction of the rotor 14, and the rotor chamber 13 has at least the blade 14a in front of the inlet 11. A relief groove 15 having a wide interval is formed along the trajectory of the blade 14a of the rotor 14 from a position one pitch apart from the outlet 12 to the outer periphery of the tip of the blade 14a, or both sides of the blade 14a, or both sides and the outer periphery of the tip. This is a fluid energy extraction device.

[Effect]

The rotor 14 rotates when fluid flows in from the inlet 11. As the rotor 14 rotates, the fluid flows through the blades 11.
It flows out from a minute gap between the inner wall 13a of the rotor case 10 and the inner wall 13a of the rotor case 10. In this way, the fluid flowing out from the gap between the inner wall 13a and the blade 14a passes through the relief groove 15 one after another and reaches the outlet 12. Since the fluid passes through the relief groove 15 and reaches the outlet 12 in this way, the rotor 1
The fluid frictional resistance of the fluid against the rotation of 4 is reduced, and the accuracy is greatly improved.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4. In FIGS. 1 and 2, 10 is a rotor case having an inlet 11 and an outlet 12, and this rotor case 1
A rotor chamber 13 is formed in 0. This rotor chamber 1
A rotor 14 having a plurality of blades 14a formed thereon at equal intervals radially is rotatably inserted into the rotor 3, and the tips of the blades 14a of the rotor 14 and the inner wall 13 of the rotor chamber 13 are connected to each other.
A slight gap is formed between a and 13b.

In this way, one of the inner walls 13a and 113b, which are in contact with the blades 14a of the rotor 14, is formed by at least one pitch of the blades 14a of the rotor 14 in front of the inlet 11 formed in the tangential direction of the rotor 14. There is also an inner wall 13b between the inlet 11 and the outlet 12 in the reverse direction of the rotor 14, at least the blade 14.
A distance corresponding to one pitch or more of a is formed.

By doing so, fluid energy is transferred to the rotor 14.
, and the rotor 14 will not rotate in reverse. Further, between the inner wall 13a on the inlet side and the inner wall 13b on the outlet side, an arc-shaped relief groove 15 is formed along the rotor 14, the width being wider than the width of the blade 14a and larger than the tip of the blade 14a. The relief groove 15 communicates with the outlet 12. Incidentally, in this embodiment, this relief groove 15 is
Although the shape is wider than the width of the blade 4a and larger than the tip diameter of the blade 1da, the shape is not limited to this.
It is sufficient that the shape is larger than the tip diameter of the blade 1.
It may be just a shape wider than the width of 4a.

On the other hand, as shown in FIG. 3, on the center line of the rotor 14 is a first guide shaft 21 supported at one end by the rotor case 10 and at the other end by a gear case 20 fixed to the rotor case 10. A driving gear 23a constituting a reduction gear mechanism 23 is integrally formed at one end of the rotor 14. One gear group of these reduction gear machine JflS 23 has a surface number 1! ' It is rotatably supported on a shaft 21, and the other gear group is rotatably supported on a second kite shaft 22 arranged parallel to the first kite 1NI21.

These reduction gear mechanisms 23 are built in the gear case 20, and the reduction gear mechanisms @23 mesh with a driven center 23b fixed to a transmission shaft 24 rotatably supported by the gear case 20. There is. A transmission gear 26 that meshes with the south is fixed to the other end of the transmission shaft 24 and is formed on the outer periphery of a roller housing 31 that is rotatably supported via a support shaft 25 that is fixed to the gear case 20. As a result, the roller housing 31 is rotated.

Furthermore, as shown in FIG.
There are four rollers 32 at equal intervals in the circumferential direction on the outer periphery of the
are rotatably supported on their respective shafts, and between this roller housing 31 and a cam block 33 installed in the gear case 20, a different type of fluid different from the main fluid is sucked, and a fluid of a different type than the main fluid is sucked from the tip thereof. A tube pump 30 is constructed by disposing an injection tube 34 with a large elastic restoring force for outflow.

Next, the operation of this embodiment will be explained. Rotor case 10
The main fluid is supplied from the inlet 11 of the rotor chamber 13 and enters the rotor chamber 13. This fluid acts on the blades 14a of the rotor 14, causing the rotor 14 to rotate.

At this time, between the mutually adjacent blades 1da and the inner walls 13a and 13b of the rotor chamber 13, and between the blade 14a and the inner wall 13a.
The fluid that passes through the gap between the two moves. As the rotor 14 rotates, a part of the fluid reaches the relief groove 15, moves to the relief groove 15, and is discharged from the outlet 11, so that the fluid frictional resistance of the rotor 14 is reduced. As a result, the rotor 14 can rotate accurately even in the small flow rate region shown in FIG. 5, and stable accuracy can be obtained.

In this way, when the rotor 14 rotates in accordance with the flow rate, this rotation is reduced in speed and transmitted to the driven gear 23b from the drive gear 23a via the gear group as shown in FIG. The roller housing 31 of is rotated in a predetermined direction.

Therefore, the injection tube 34 is sequentially pushed out by the roller 32, and the different fluids are thereby supplied forward at a constant ratio.

In this embodiment, the rotation of the rotor 14 is used as a driving source for the tube pump 30, but instead of this,
By extracting the rotation of the rotor 14 and displaying the flow rate, it becomes possible to provide a flow meter that can accurately display the flow rate in a small flow rate range.

(Effects of the Invention) As is clear from the embodiments described above, the present invention forms a rotor chamber 13 between the port 11 and the outlet 12, leads fluid from the port 11, and discharges the fluid from the port 12. In the rotor case 10, a rotor 14 having blades 14a formed at equal intervals in the radial direction is rotatably arranged in the rotor chamber 13.
a and the inner walls 13a and 13b of the rotor chamber 13, and the inlet 11 is formed at a position 16 where the inlet flows from a tangential direction to the rotor 14.
4, the outlet 1 is moved from the inlet 11 by a distance of at least one pitch of the blade 14a.
2, and the rotor chamber 13 has an outlet 1 from a position at least one pitch of the blade 14a in front of the inlet 11.
This is a fluid energy extraction device in which relief grooves 15 having wide intervals are formed along the trajectory of the blade 14a of the rotor 14 on the outer periphery of the tip of the blade 1da or on both sides of the blade 14a, or on both sides and the outer periphery of the tip.

Therefore, the fluid friction resistance caused by this fluid on the rotor is greatly reduced, so that the rotor can rotate reliably, especially in a small flow range, and reliability is improved.

Furthermore, even when different types of fluids are mixed at a fixed ratio with respect to the main fluid, the rotation rotates accurately according to the flow rate, so the mixing ratio of these fluids remains constant, making it possible to automate such work. becomes possible. Furthermore, when the rotation of the rotor is extracted to measure the flow port, it is particularly suitable for use in a small flow rate region. Furthermore, since only the maximum relief groove is formed between the rotor case and the blades, remarkable effects such as a simple structure and low cost can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main part showing an embodiment of the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1, Fig. 3 is a front sectional view showing the embodiment of the invention, and Fig. 4 is a 3 5 is a diagram showing flow rate measurement accuracy, and FIG. 6 is a sectional view of a main part showing a conventional example. 10 is a rotor case, 11 is an inlet, 12 is an outlet,
13 is a rotor chamber, 13a and 13b are inner walls, 14 is a rotor, 14a is a blade, 15 is a relief groove, 20 is a gear case, 21 is a first guide shaft, 22 is a second guide shaft, 23 is a reduction gear groove, 24
is a transmission shaft, 25 is a support shaft, 30 is a tube pump, 31 is a roller housing, 32 is a roller,
34 is an injection tube, patent applicant Nitto Seiko Co., Ltd. Figure 3 Figure 5 Figure 6 140U 140

Claims (1)

[Claims] 1) In a rotor case 10 in which a rotor chamber 13 is formed between an inlet 11 and an outlet 12, fluid is introduced from the inlet 11, and the fluid is discharged from the outlet 12, the rotor chamber 1
A rotor 14 having blades 14a formed at equal intervals in the radial direction is arranged rotatably on the rotor 14, and the inlet 11 is formed at a position where fluid flows into the rotor 14 from a tangential direction. At least one of the blades 14a
The outlet 12 is formed at a position moved from the inlet 11 by a distance equal to or more than the pitch, and the rotor 14 is formed in the rotor chamber 13 from a position that is at least one pitch of the blade 14a in front of the inlet 11 to the outlet 12. Feather 14a
A fluid energy extraction device characterized in that a relief groove 15 is formed between the blade 14a and the blade 14a along the trajectory of the blade 14a. 2) Claim 1, characterized in that a minute gap is formed between the rotor blades and the inner wall of the rotor chamber.
Fluid energy extraction device as described in . 3) The fluid energy extraction device according to claim 1 or 2, wherein the relief grooves are formed at wide intervals along the outer periphery of the tip of the blade 14a. 4) The fluid energy extracting device according to claim 1 or 2, wherein the relief grooves are formed on both sides of the vane 14a with wide intervals. 5) The fluid energy extraction device according to claim 1 or 2, wherein the relief grooves are formed at wide intervals along both sides of the blade 14a and along the outer periphery of the tip.